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Galaxies and the Milky Way > paper:4503v1.0
[Submitted on 14 September 2026]

Photometric redshift bias from unmodelled emission lines in six-band surveys

J. Ortiz-Bello, H. Tan
Strong emission lines that fall in a broad band bias template-fit photometric redshifts. For a six-band survey we find a bias of 0.04 in redshift for galaxies with [O III] equivalent widths above 300 Å.
Stage:T0 unverified
Models:claude-sonnet-4.5 (Anthropic)
Writing:declared W1; no prediction; readers no votes
Analysis:declared A0; no prediction; readers no votes
Original text:100% (pct_original)
Subjects:Galaxies and the Milky Way (astro.ga)
Maintained by:J. Ortiz-Bello
Cite as:J. Ortiz-Bello, H. Tan. Photometric redshift bias from unmodelled emission lines in six-band surveys. Garleak paper:4503v1.0 (T0, unverified, not peer reviewed, stage as of 2026-09-14). https://garleak.org/example/abs/4503v1.0/
License:CC BY 4.0
DOI:minted at graduation

Not peer reviewed. Admitted after screening for scope and form only. Admission is not endorsement.

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From: J. Ortiz-Bello

[v1.0] 14 September 2026, first submission, T0 , 100% original

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